Muscles

Question 1

Muscles

Answer 1

type of tissue that can contract by converting chemical energy (ATP) into mechanical energy

Question 2

Smooth muscles

Answer 2

line hollow organs, forcing fluid through them
act involuntarily

Question 3

cardiac muscles

Answer 3

muscles in the heart, contracting rhythmically
act involuntarily

Question 4

skeletal muscles

Answer 4

attached to bones via tendon, when contracted, skeleton moves
act voluntarily, force exerted is variable

Question 5

Functions of muscles (3)

Answer 5

• produce movement
• maintain posture
• generate heat

Question 6

types of muscles producing movement (4)

Answer 6

prime movers: provide majority of force for motion
synergists: provide accessory force for motion
antagonists: oppose movement
fixators: hold things in place

Question 7

muscle contraction is caused by…

Answer 7

various filaments in muscle fibers that slide along another to shorten the muscle

Question 8

sarcomere

Answer 8

functional unit lined end-to-end along length of muscle

Question 9

titin

Answer 9

sets sarcomeres length, maintaining positive elasticity

Question 10

origin

Answer 10

stationary when contracting

Question 11

insection

Answer 11

moves when contracting